Days Between Two Dates Calculator Online

Calculate the number of days between two calendar dates effortlessly. Track your stay in a country, project deadlines, historical events, personal milestones, or anything else measured in days. You can also exclude weekends if needed.

Calculator of Days Between Two Dates

Calculate the number of days between two dates. Enter the start date and the end date below.

Note: The calculation is based on calendar days.

Start Date:

End Date:

Exclude weekends

Number of Days:

How to Use the Calculator

Enter the starting date in the “Start Date” field.
Enter the ending date in the “End Date” field.
If you want to count weekday only and exclude weekends (Saturdays and Sundays), check the “Exclude Weekends” option.
Click the “Calculate” button to instantly get the total number of days between the two dates.
To copy the result, click the “Copy Result” button.
To clear all fields and reset the tool, click “Clear All.”

Real-World Examples

Here are some interesting historical comparisons showing how many days passed between significant events:

American Revolution: The Declaration of Independence (July 4, 1776) to the end of the war (September 3, 1783) – 2,618 days.
Civil War: Start of the Civil War (April 12, 1861) to the end (April 9, 1865) – 1,458 days.
First Flight to Moon Landing: Wright brothers’ first flight (December 17, 1903) to Apollo 11 moon landing (July 20, 1969) – 23,932 days.
9/11 to Today: September 11, 2001, to January 1, 2024 – 8,190 days.
American Constitution: Constitution signed (September 17, 1787) to its ratification (June 21, 1788) – 278 days.
Pearl Harbor Attack to V-J Day: December 7, 1941, to September 2, 1945 – 1,365 days.
Martin Luther King Jr.’s Speech to His Assassination: “I Have a Dream” speech (August 28, 1963) to his assassination (April 4, 1968) – 1,681 days.
World War I: Start (July 28, 1914) to end (November 11, 1918) – 1,567 days.
World War II: Start (September 1, 1939) to end (September 2, 1945) – 2,194 days.
Fall of Berlin Wall to German Reunification: Wall fell (November 9, 1989) to reunification (October 3, 1990) – 328 days.
First Email to First Website: First email sent (October 29, 1969) to first website launch (August 6, 1991) – 7,957 days.
Stock Market Crash to Great Depression End: Crash (October 29, 1929) to end of the Great Depression (March 4, 1933) – 1,222 days.
Columbus Reaches America to USA Independence: Columbus arrives (October 12, 1492) to July 4, 1776 – 103,500 days.
First Modern Olympics to Tokyo 2020: First Olympics (April 6, 1896) to Tokyo Olympics opening ceremony (July 23, 2021) – 45,857 days.
First Man in Space to First Man on the Moon: Yuri Gagarin’s flight (April 12, 1961) to Apollo 11 (July 20, 1969) – 3,017 days.